Quantity and distribution of phosphate solubilizing microorganism in various soil
1990
Thongchai Mala | Suparb Buranakarnchana | Wantanee Phungsang (Kasetsart Univ., Bangkok (Thailand). Faculty of Agriculture. Dept. of Soil Science)
Quantity and distribution study on phosphate solubilizing microorganisms were conducted from upland and lowland of Roi-et soil at 0-15 and 15-30 cm soil depth, and from Banglane, Kamphaeng Saen and Sena soil at 0-15 cm soil depth. In agar medium, phosphate solubilizing bacterial population from upland and lowland of Roi-et soil were highly significant. The average population of these bacteria were 15.25 percent of total bacteria and there were 51.49 percent of phosphate solubilizing fungi in this soil. There were 13.36, 6.16 and 33.33 percent of phosphate solubilizing bacteria, 5.34, 29.73 and 33.37 percent of phosphate solubilizing fungi in Banglane, Kamphaeng Saen and Sena soil respectively. Sixty three isolates of fungi and forty two isolates of bacteria were tested in phosphate solubilizing efficiency in agar medium. Their efficiencis were highly significant. The efficiency of the fungi in phosphate solubilization were 2-4.33 times higher than those bacteris. The high phosphate solubilizing efficiency isolates were composted of 14 fungi, KF1, KF2, KF4, KF5, KF6, KF7, KF8, KF9, KF10, KF28, KF29, RF30, RF32, RF33 and 9 bacteria, KB1, KB9, SB2, SB5, SB7, SB10, RB9, RB11 and RB12.
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